modelVerticalMill_L3

Vertical roller mill such as ball-and-race mill and roller-bowl mills

Extends from ClaRa.Basics.Icons.RollerBowlMill, ClaRa.Basics.Icons.ComplexityLevel (Displays the complexity level inside model icon ).

Information

For detailed model documentation please consult the html-documentation shipped with ClaRa.

Authorship and Copyright Statement for original (initial) Contribution

Author:

References:

For references please consult the html-documentation shipped with ClaRa.

Remarks:

This component was developed by ClaRa development team under the 3-clause BSD License.

Acknowledgements:

ClaRa originated from the collaborative research projects DYNCAP and DYNSTART. Both research projects were supported by the German Federal Ministry for Economic Affairs and Energy (FKZ 03ET2009 and FKZ 03ET7060).

CLA:

The author(s) have agreed to ClaRa CLA, version 1.0. See https://claralib.com/pdf/CLA.pdf

By agreeing to ClaRa CLA, version 1.0 the author has granted the ClaRa development team a permanent right to use and modify his initial contribution as well as to publish it or its modified versions under the 3-clause BSD License.

The ClaRa development team consists of the following partners:

TLK-Thermo GmbH (Braunschweig, Germany)

XRG Simulation GmbH (Hamburg, Germany).

Parameters

Type	Name	Default	Description
Fundamental Definitions
ClaRa.Basics.Media.FuelTypes.BaseFuel	fuelModel	simCenter.fuelModel1	Fuel type
ClaRa.Basics.Units.MassFraction	xi_coal_h2o_res	0	Residual moisture of coal
TILMedia.Gas.Types.BaseGas	gas	simCenter.flueGasModel	Medium to be used in tubes
Mill Definition
ClaRa.Components.Mills.HardCoalMills.Fundamentals.RollerBowlMillDefinition	millKoeff	ClaRa.Components.Mills.HardCoalMills.Fundamentals.STV1()	Coefficients of the mill
Integer	N_mills	1	Number of equal mills in parallel
Initialisation
Basics.Units.Temperature	T_out_start	simCenter.T_amb_start	Initial temperature in mill
Basics.Units.Mass	mass_rct_start	1000	Initial mass of Raw Coal on the Table
Basics.Units.Mass	mass_pct_start	100	Initial mass of Pulverized Coal on the Table
Basics.Units.Mass	mass_pca_start	100	Initial mass of Pulverized Coal in the Air
Basics.Units.MassFraction[fuelModel.N_c - 1]	xi_wc_start	fuelModel.defaultComposition	Initial Wet Coal composition
Basics.Units.MassFlowRate	m_flow_air_out_start	1	Initial primary air outlet mass flow rate
Integer	initOption	0	Type of initialisation
Summary and Visualisation
Boolean	contributeToCycleSummary	simCenter.contributeToCycleSummary	True if component shall contribute to automatic efficiency calculation
Expert Settings
Boolean	applyGrindingDelay	false	True if grinding process introduces a dead time
Basics.Units.Time	Tau_delay	120	Grinding dead time
Expert Settings › Shutdown
Boolean	activateGrindingStatus	false	True, if Status input is activated which makes it possible to stop the grinding process

Connectors

Type	Name	Default	Description
Modelica.Blocks.Interfaces.RealOutput	Delta_p_mill		Pressure Difference between inlet and outlet connector
Modelica.Blocks.Interfaces.RealInput	classifierSpeed		Speed of classifier
Basics.Interfaces.FuelFlueGas_inlet	inlet		Combined gas-and-coal(raw, wet) inlet
Basics.Interfaces.FuelFlueGas_outlet	outlet		Combined gas-and-coal(pulverised, dry) outlet
Modelica.Blocks.Interfaces.RealOutput	P_mills		Mill power of all parallel mills
Modelica.Blocks.Interfaces.RealInput	grindingStatus	grindingStatus_	Input to stop grinding process, when mill is shutdown

Components

Type	Name	Default
String	complexity (from ComplexityLevel)	"??"
ClaRa.Basics.Interfaces.Connected2SimCenter	connected2SimCenter
ClaRa.SimCenter	simCenter
TILMedia.Gas.Gas_pT	gasIn
ClaRa.Components.Mills.HardCoalMills.Fundamentals.SummaryMill	summary
TILMedia.Gas.Gas_pT	gasOut
ClaRa.Basics.Media.FuelObject	coalIn
ClaRa.Basics.Media.FuelObject	coalOut

Revisions

For revisions please consult the html-documentation shipped with ClaRa.